package cn.tedu.ivos.web.filter;

import java.io.IOException;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import cn.tedu.ivos.pojo.vo.LoginUser;
import cn.tedu.ivos.service.template.TokenTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.authority.AuthorityUtils;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;

/**
 * token过滤器 验证token有效性
 */
@Component
public class JwtAuthenticationTokenFilter extends OncePerRequestFilter
{
    @Autowired
    private TokenTemplate tokenService;

    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
            throws ServletException, IOException
    {
        LoginUser loginUser = tokenService.getLoginUser(request);
        if (loginUser!=null)
        {
            tokenService.verifyToken(loginUser);

            UsernamePasswordAuthenticationToken authenticationToken =
                    new UsernamePasswordAuthenticationToken(loginUser, null,AuthorityUtils.createAuthorityList(loginUser.getPermissions().toArray(new String[]{})));
            authenticationToken.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
            SecurityContextHolder.getContext().setAuthentication(authenticationToken);
        }
        chain.doFilter(request, response);
    }
}
